Paper Title:
Fabrication of Ti-Based Biodegradable Material Composites Prepared by Spark Plasma Sintering Method
  Abstract

This study aims at producing porous Ti filled with biodegradable materials for biomedical implants by means of spark plasma sintering method (SPS). To improve bone fixation and to obtain appropriate Young’s modulus as a medical implant material, we applied -tri calcium phosphate (-TCP) to the Ti-based composite. Ti/-TCP powder mixtures were sintered by SPS under applied stress of 45MPa with various temperatures and holding time. Vickers hardness (Hv) of obtained composite increased with increasing the holding time up to 10 min, and saturated hardness was approximately 750 Hv, which is extremely higher than that of bulk Ti. Hardness also increased as sintering temperature increased up to 1473 K. From the results of microstructure observations by scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDXS), O- and P- containing Ti surrounded around Ti particle, and O diffused into Ti particle to a certain extent. X-ray diffraction results indicated several kinds of Ti-O and/or Ti-P formed in the specimen. Results indicated that it is the brittle phases formed during sintering that increased the hardness.

  Info
Periodical
Materials Science Forum (Volumes 654-656)
Main Theme
Edited by
Jian-Feng Nie and Allan Morton
Pages
2158-2161
DOI
10.4028/www.scientific.net/MSF.654-656.2158
Citation
E. Miura-Fujiwara, T. Teramoto, H. Sato, E. Kobayashi, Y. Watanabe, "Fabrication of Ti-Based Biodegradable Material Composites Prepared by Spark Plasma Sintering Method", Materials Science Forum, Vols. 654-656, pp. 2158-2161, 2010
Online since
June 2010
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$32.00
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